Speed Coordination System for Electric Drives of a Plate Mill Stand: Theory and Development

2021 ◽  
Author(s):  
A. S. Karandayev ◽  
B. M. Loginov ◽  
M. A. Zinchenko ◽  
D. M. Mazitov ◽  
A. S. Podolko
Keyword(s):  
Plate Mill ◽  
Electric Drives ◽  
Coordination System ◽  
Mill Stand

Improvement of Work Roll Bending Control System Installed at Plate Mill Stand

2017 ◽  
Author(s):  
Vadim R. Gasyarov ◽  
Andrey A. Radionov ◽  
Boris M. Loginov ◽  
Stanislav S. Voronin ◽  
Vadim R. Khramshin
Keyword(s):  
Control System ◽  
Work Roll ◽  
Plate Mill ◽  
Roll Bending ◽  
Mill Stand

scholarly journals Dynamic Torque Limitation Principle in the Main Line of a Mill Stand: Explanation and Rationale for Use

Machines ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 76 ◽  
Author(s):  
V.R. Gasiyarov ◽  
V.R. Khramshin ◽  
S.S. Voronin ◽  
T.A. Lisovskaya ◽  
O.A. Gasiyarova
Keyword(s):  
Research Team ◽  
Elastic Collision ◽  
Dynamic Loads ◽  
Load Torque ◽  
Electric Drives ◽  
Drive Control ◽  
Negative Acceleration ◽  
Before And After ◽  
Mill Stand ◽  
Case Basis

This paper substantiates why it is necessary to limit the dynamic loads in stand shafts when closing angular gaps. The paper is a feasibility study of a concept developed specifically to limit each of the factors that affect amplitude of the dynamic torque; limitations applied are determined on a case-by-case basis. The research team studied the components of elastic torque in a dual-mass electromechanical system of Mill 5000 caused by vibrations arising from the elasticity of transmission as well as from the vibrations caused by elastic collision itself. It is shown that the lowest possible pre-acceleration is necessary for decreasing the dynamic coefficient at a near-nominal load torque. A principle of limiting dynamic loads when closing an angular gap is proposed, which implies collecting tachograms of an electric drive subjected to positive or negative acceleration before and after the fed metal is captured. The research team has developed drive control principles to implement this approach. The recommendation is to upgrade the electric drives of the reversing stand in Mill 5000.

Finite Element Modal Analysis on 5500mm Heavy Plate Mill Rack

2013 ◽  
Vol 753-755 ◽  
pp. 1708-1711
Author(s):  
De Chen Zhang ◽  
Xing Lei Yao ◽  
Yan Ping Sun ◽  
Yuan Li
Keyword(s):  
Finite Element ◽  
Analytical Method ◽  
Computer Aided Design ◽  
Design Method ◽  
Vertical Vibration ◽  
Plate Mill ◽  
3D Design ◽  
Heavy Plate ◽  
Finite Element Software ◽  
Mill Stand

Aiming at the vibration problems in Anshan Iron 5500mm heavy plate mill production line, the mill frame vibration in the main parts is researched by using the computer aided design method and the analytical method. Using SolidWorks 3D design software for frame modeling, the model is imported into the ANSYS finite element software, then 5500mm heavy plate mill stand 12 order natural frequencies and natural vibration type is calculated; applying analytical method of the 12th band of vertical vibration the natural frequency is calculated, and the finite element results is analysed comparatively. This paper lays the foundation for the study of the vibration of the mill stand in the future, provides a theoretical basis for the dynamic design of the mill stand.

Method limiting dynamic loads of electromechanical systems of plate mill stand

2018 ◽  
Author(s):  
Alexander S. Karandaev ◽  
Vadim R. Gasiyarov ◽  
Ekaterina A. Maklakova ◽  
Boris M. Loginov ◽  
Ekaterina A. Khramshina
Keyword(s):  
Dynamic Loads ◽  
Plate Mill ◽  
Electromechanical Systems ◽  
Mill Stand

Reactive Power Control of Reversible Electric Drives by Using Industrial Smart Grid Technology

2015 ◽  
Vol 789-790 ◽  
pp. 1011-1015
Author(s):  
Andrey A. Radionov ◽  
Alexander S. Maklakov ◽  
Vadim R. Gasiyarov
Keyword(s):  
Smart Grid ◽  
Power Control ◽  
Electric Drive ◽  
Reactive Power ◽  
Grid Technology ◽  
Plate Mill ◽  
Reactive Power Control ◽  
Electric Drives ◽  
Electric Equipment ◽  
Smart Grid Technology

This paper addresses the issue of associating a concept of industrial smart grid technology for a reactive power control of reversible electric drives. The research focus was concerned with the theoretical analysis of active, reactive and apparent power by the main reversible electric drive of plate mill rolling stand. Typical features of power electric equipment of modern reversible electric drives allow us to develop the reactive power control. The reactive power control can be created out by using of back to back converters which connect the reversible electric drive with the supply mains. Experiments in the plate mill were carried at the difficult-to-form steel grade in the range of roughing and finish rolling. It was established that the reactive power generation can be used in the range of the roughing. The huge prospects of the reversible electric drives integration based on back to back converters in Industrial Smart Grid have been determined due to the fact that to control of reactive and apparent power flows.

scholarly journals Development of Digital Control Algorithms for the Mechatronics System Drives of Reversing Plate Mill Stands

2021 ◽  
Vol 21 (1) ◽  
pp. 122-140
Keyword(s):  
Control System ◽  
Position Control ◽  
Control Channel ◽  
Control Algorithms ◽  
Plate Mill ◽  
Thickness Control ◽  
Automatic Gauge Control ◽  
Gap Control ◽  
Mill Stand ◽  
Roll Gap

Expanding the plate mill product range implies the improvement of control algorithms for the mechatronics control system drives of the reversing stands. The most important objectives include increasing the accuracy of geometric dimensioning and tolerancing, as well as improving the profile and surface flatness of rolled pro­ducts. The structure explaining the automatic ROLL-GAP CONTROL concept is provided, which allows controlling the thickness and gap between SMS-Demag AG rolls. This concept is implemented in the '5000' mill stand of Magnitogorsk Iron and Steel Works. The structural diagram of the automatic gauge control system (AGS) is presented. The functional diagram of the hydraulic gap control (HGC) system is presented, which includes a fast proportional control channel and a relatively slow integral position control channel. The principle of automatic thickness control is discussed, implemented in the automatic gauge control (AGC) system of the mill stand TCS controller. The diagram and dependences are prepared for the calculation of the nonlinear thickness controller parameters. The functions of the RAC regulator are described, intended for compensation of the tensile difference (gap spacing) at the mill stand sides. The dynamic impact compensation system functions are considered. The removal of the roll bending and deformation control signals is substantiated. The disadvantages of AGC are noted for sheets with a thickness below 10 mm. The most dangerous case is the tearing of metal fragments from the rear sheet side caused by the incorrect operation of the gauge control system. A method for hydraulic gap control is proposed based on the fast increase of the roll gap in the rear part of the rolled sheet during the last passage when rolling thin sheets. The results of experimental studies made on the '5000' mill are presented. The efficiency of the proposed control method has been confirmed. The oscillograms of signals are presented characterizing thickness variations. HGC and AGC systems with the proposed adjustments are proven to provide high-accuracy hydraulic position control and thickness control along the sheet length and width.

System of automated control of Hydraulic screw-down mechanisms of plate mill stand

2015 ◽  
Author(s):  
Andrey G. Shubin ◽  
Boris M. Loginov ◽  
Vadim R. Khramshin ◽  
Sergey A. Evdokimov ◽  
Alexander S. Karandaev
Keyword(s):  
Plate Mill ◽  
Automated Control ◽  
Mill Stand
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